JPH09227045A - Ladder device for inspecting elevator pit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a worker to safely and easily transfer from a landing floor to a ladder by practically reducing the distance between the landing floor and the ladder below it. SOLUTION: A foothold section 9 is formed on a toe guard 7 located below a landing threshold 5, and a ladder 10 is arranged below the toe guard 7. The horizontal bar 11b of a handrail member 11 is coupled with the groove of the landing threshold 5, and fitting bars 11c are fixed to opened door panels 6a, 6b. A worker grips the handrail member 11, puts a foot on the foothold section 9 of the toe guard 7, and transfers to the ladder 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ladder device for inspecting an elevator pit used for entering and exiting a pit at a lower part of a hoistway of an elevator.

[0002]

2. Description of the Related Art Ladder devices for inspecting elevator pits have been used to descend from the lowest floor landing floor to the pit below the elevator hoistway during regular elevator inspections and accidents. Are being developed.

FIG. 8 shows an example of a conventional ladder device for inspecting an elevator pit. A ladder 2 and a counterweight for pit inspection are provided on a side surface 1 of a hoistway pit formed at a lower part of the lowermost floor of an elevator. 3 are attached respectively. A hall sill 5 is provided on the hall floor 4 on the lowest floor of the elevator, and the hall sill 5 guides opening and closing movements of the hall door 6.
A toe guard 7 is installed below the landing threshold 5.

Workers enter and leave the hoistway pit as follows. First, the car 8 is stopped above the bottom floor, and then the landing door 6 on the bottom floor is unlocked to open it to the left and right. At this time, since a force in the closing direction is constantly acting on the hall door 6, some kind of stopper is used to hold the hall door 6 in the open state. After that, the worker extends the body from the landing floor 4 and the ladder 2 for pit inspection.
To the bottom of the pit.

However, in this ladder device for inspecting the elevator pit, since the ladder 2 is attached to the side surface 1 of the hoistway pit, an unnatural posture is taken when a worker transfers from the landing floor 4 to the ladder 2. He was compelled and required skill to transfer. Further, when the width of the car 8 in the left-right direction increases, the distance from the landing floor 4 to the ladder 2 also increases accordingly, and the transfer to the ladder 2 becomes very dangerous.
Further, in this case, since the gap between the side surface of the car 8 and the pit side surface 1 becomes smaller as the width of the car 8 in the left-right direction increases, the ladder 2 should be mounted close to the pit side surface 1. Therefore, when the ladder 2 is used, the tip of the foot comes into contact with the pit side surface 1 to make it difficult for the ladder 2 to be caught and the risk of falling is increased.

FIG. 9 shows another conventional ladder device for inspecting an elevator pit which solves the above problems. In this ladder device for inspecting an elevator pit, the ladder 2 is installed below the hall sill 5, specifically below the toe guard 7. The worker opens the landing door 6, lowers his foot from the landing floor 4, rides on the ladder 2, and gets down to the pit.

[0007]

However, in the conventional elevator pit inspection ladder device shown in FIG. 9, since the toe guard exists between the landing floor and the ladder, the ladder is greatly separated from the landing floor. Therefore, there is a problem that it is difficult for the worker to get on the ladder and it is easy to step off the foot.

Further, there is no handrail that can be grasped by hand when moving from the landing floor to the ladder or when climbing from the ladder to the landing floor, which makes it difficult to get on and off between the landing floor and the ladder.

Therefore, an object of the invention described in claims 1 and 4 is to make the distance between the landing floor and the ladder below it substantially small, and to safely and easily from the landing floor to the ladder. It is to provide a ladder device for inspection of an elevator pit that can be moved.

Further, in addition to the above-mentioned object, the object of the invention described in claim 3, claim 7, claim 8 and claim 9 is to use a handrail to get on and off between the landing floor and the ladder. (EN) A ladder device for inspecting an elevator pit that can be safely and easily performed.

[0011]

In order to achieve this object, the invention described in claim 1 is an elevator pit used for descending from a landing floor on the lowest floor of an elevator to a pit below an elevator hoistway. In the inspection ladder device, a footrest part provided on the toe guard installed at the lower part of the landing sill for landing doors, and a foothold part provided below the toe guard and extending from directly below the footrest part toward the bottom surface of the pit. And a ladder for inspecting the pit, and the footrest functions as a part of the ladder.

Since the footrest of the toe guard exists between the landing floor and the ladder, the worker can transfer to the ladder from the landing floor through the footrest of the toe guard. Therefore,
You can safely and easily get off the landing floor via the ladder to the hoistway pit.

The invention described in claim 2 is the ladder device for inspecting an elevator pit according to claim 1,
The ladder is provided below the toe guard so as to be located in a vertical plane substantially the same as the footrest of the toe guard. Since the ladder and the footrest are located in substantially the same vertical plane, the footrest can be used as a part of the ladder without a feeling of discomfort.

The invention described in claim 3 is the ladder device for inspecting an elevator pit according to claim 1,
The handrail member has a lower end that engages with the landing sill and an upper end that is attached to the landing door when opened. The handrail member is attached to the landing door to prevent the landing door from closing. It is characterized by that. The workers
By installing the handrail member, it is possible to safely and easily get on and off between the landing floor and the ladder. The landing threshold acts as a holding member for the lower end of the handrail member. Further, since the handrail member blocks the closing operation of the landing door, it is possible to prevent the landing door from being accidentally closed during the work.

According to a fourth aspect of the present invention, there is provided a ladder device for inspecting an elevator, which is used for descending from a landing floor on the lowest floor of an elevator to a pit below an elevator hoistway. Installed in the lower part of the landing door, moved from the initial position according to the opening movement of the landing door, and returned to the initial position according to the closing movement of the landing door, and the pit from the bottom of the landing threshold And a ladder for pit inspection extending toward the bottom surface of the pit, the upper portion of the ladder is disposed between the toe guard at the initial position and the side surface of the pit, and the toe guard is moved from the initial position. It is characterized by being exposed and usable when exposed.

The upper part of the ladder is usually located behind the movable toe guard in the initial position, but when the movable toe guard is moved from the initial position in response to the opening movement of the landing door, it is exposed, that is, appears. Can be used. This allows the worker to easily descend from the landing floor to the ladder immediately below.

The invention described in claim 5 is the ladder device for inspecting an elevator pit according to claim 4,
The toe guard is composed of left and right parts divided into two parts, and the left and right parts are moved in opposite directions so as to open and close according to opening and closing movement of the landing door. . The toe guard consists of two parts, the left and right parts, so when the landing door is composed of two door panels that are opened and closed in opposite directions, the opening and closing movement of the landing door and the left and right sides of the toe guard. The interlocking with the movement of the parts can be achieved by a relatively simple structure.

The invention described in claim 6 is the ladder device for inspecting an elevator pit according to claim 4,
The present invention further includes a switch device that operates in response to the movement of the toe guard from the initial position, and the switch device stops the operation of the hoisting device of the elevator. During inspection of the elevator pit, the toe guard always moves from the initial position, so the switch device operates in response to this, stopping the operation of the elevator hoisting device. Therefore, it is possible to prevent the danger that the elevator hoisting device is accidentally activated and the car is lowered when the elevator pit is inspected.

The invention described in claim 7 is the ladder device for inspecting an elevator pit according to claim 4,
The upper end portion further includes a handrail member attached to the landing door when the door is opened, and the handrail member prevents the closing operation of the landing door by being attached to the landing door.

By installing the handrail member, the worker can safely and easily get on and off the landing floor and the ladder. Further, since the handrail member blocks the closing operation of the landing door, it is possible to prevent the landing door from being accidentally closed during the work.

The invention described in claim 8 is the ladder device for inspecting an elevator pit according to claim 7,
The ladder is composed of a pair of vertical bar members and a plurality of horizontal bar members for supporting legs that are connected at a predetermined interval between the pair of vertical bar members, and the handrail member extends in the vertical direction. It consists of a pair of handrail bars that are present and attached to the landing door, and a horizontal rod that connects the lower end portions of the pair of handrail rods, and the horizontal rod is when the pair of handrail rods is attached to the landing door. , And functions as a horizontal bar member in the upper stage of the ladder.

In addition to the original function as a handrail, the handrail member also functions as a horizontal bar member in the upper stage of the ladder. Therefore, by also using such a member, the overall cost can be reduced.

The invention described in claim 9 is the ladder device for inspecting an elevator pit according to claim 8,
Each of the pair of vertical bar members has an elongated hole extending along the longitudinal direction, the horizontal bar of the handrail member penetrates the elongated hole of the pair of vertical bar members, and the handrail member is not used. Sometimes, the horizontal bar is located at the lower end of the elongated hole, and when used, the horizontal bar is located at the upper end of the elongated hole. When not in use, the handrail member is stored with its horizontal bar located at the lower end of the long hole of the vertical bar member along the ladder,
During use, the horizontal bar is guided by the long hole of the vertical bar member and pulled up to the upper end of the long hole. Thus, the ladder functions as a guide member for the movement of the handrail member and also as a storage member when the handrail member is not used.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a ladder device for inspecting an elevator pit according to the present invention will be described below with reference to FIGS. 1 to 7, in which the same parts as those in FIGS. explain. 1 to 3 show a first embodiment of the present invention, in which a hall sill 5 is installed on a hall floor 4, and a hall door 6 is guided and supported on the hall sill 5. This landing door 6 has two door panels 6 which are moved in opposite directions.
It is composed of a and 6b. A toe guard 7 is installed below the landing sill 5, and a footrest 9 is provided substantially in the center of the toe guard 7. In the present embodiment, the footrest 9 is composed of a rectangular opening formed in the toe guard 7. The footrest opening 9 is sized so that the shoes of a worker can be inserted sufficiently.

Below the toe guard 7, strictly speaking, the footrest 9
A ladder 10 is installed below the
As shown in FIG. 2, the footrest portion 9 of the toe guard 7 is
It extends from directly under the toe guard 7 to the pit bottom surface 1a in the same vertical plane as the above. In this way, the footrest 9 is positioned in line with the ladder 10 therebelow and functions as a part of the ladder 10.

The U-shaped handrail member 11 includes a pair of parallel handrail rods 11a extending in the vertical direction and the handrail rods 1.
Horizontal bar 11b connecting the lower ends of 1a and handrail bar 1 in parallel
It is composed of a mounting rod 11c extending horizontally from the upper end of 1a. Although the handrail bar 11a, the horizontal bar 11b, and the mounting bar 11c are composed of a single bar member in this embodiment, if necessary, a plurality of bar members may be connected by welding or the like. It can also be configured. The horizontal bar 11b of the handrail member 11 is fitted in the groove of the hall sill 5 that guides the hall door 6, and the tip of each mounting rod 11c is attached to the pair of open door panels 6a, 6b. In this way, the handrail member 11 is securely held at the upper end by the door panels 6a and 6b and at the lower end by the hall sill 5.

Next, the operation of this embodiment will be described. At the time of checking the pit, the worker stops the elevator car above the lowest floor and then unlocks the landing door 6 on the lowest floor to open it to the left and right. A switch device (not shown) that operates in conjunction with the unlocking of the landing door 6 is provided, and the switch device shuts off the power of the hoisting machine installed in the machine room in response to the unlocking. As a result, it is possible to reliably prevent the elevator car from being raised or lowered by mistake during the inspection work.

After this, the worker prepares the handrail member 11
Are mounted as shown in FIG. More specifically, the horizontal bar 11b of the handrail member 11 is fitted into the groove of the hall sill 5, and the tips of the mounting bars 11c are fixed to the open door panels 6a and 6b. In this way, the handrail member 11 is firmly held by the door panels 6a and 6b and the hall sill 5, and at the same time, prevents the hall door 6 being biased in the closing direction from closing. The worker grips the handrail member 11 from the landing floor 4, rests his foot on the footrest 9 of the toe guard 7, further transfers to the ladder 10, and then descends to the pit bottom 1a.

As described above, since the footrest portion 9 of the toe guard 7 exists between the landing floor 4 and the ladder 10, the worker can use the footrest portion 9 substantially as a part of the ladder 10. It is possible to easily get off from the landing floor 4 to the ladder 10 without feeling the inconvenience that the landing floor 4 and the ladder 10 are considerably separated from each other. Further, at this time, since the handrail member 11 can be used, getting on and off the ladder 10 can be performed safely and easily.

When exiting from the pit, the above operation is reversed. 4 to 7 show a second embodiment of the present invention, in which the toe guard 12 is divided into two parts and is composed of left and right parts 12a and 12b. These left and right portions 12a, 12b are movable left and right, and slide in a direction away from the initial position shown in FIG. 4, that is, the adjacent positions adjacent to each other, in conjunction with the opening movement of the door panels 6a, 6b. , The door panels 6a and 6b are interlocked with each other to slide toward each other and return to the initial positions.

Behind this slide type toe guard 12, that is, in the gap between the toe guard 12 and the pit side surface 1,
The handrail member 11 and the ladder 13 are stored. More specifically, the ladder 13 has its upper portion located in the above gap and extends vertically from this gap to the pit bottom surface 1a. As shown in FIGS. 4 and 5, the ladder 13 includes a pair of vertical bar members 13a and a plurality of horizontal bar members 13b connecting the vertical bar members 13a at a predetermined interval. Each of the vertical bar members 13a is provided with a guide elongated hole 14 as shown in FIGS. 6 and 7. This guide slot 1
4 extends in the longitudinal direction, and the width D of the vertical bar member 13a at the portion where the guide elongated hole 14 is bored is set to be sufficiently larger than the width d of the other portion.

As shown in FIG. 7, the elongated guide holes 14 are
In order not to hinder the connection between the vertical bar member 13a and the horizontal bar member 13b, a hole is formed at a position laterally displaced from the position of the horizontal bar member 13b. Further, the guide slot 14 has an upper end 14a.
So that it is located right above the uppermost horizontal bar member 13b ₁ .
Bent near the upper end. Further, the upper end 14a of the elongated guide hole 14 is set to be located above the uppermost horizontal bar member 13b ₁ by a distance substantially equal to the distance between the horizontal bar members 13b of the ladder 13.

The handrail member 11 has its horizontal bar 11b penetrating through the elongated guide holes 14 of the pair of vertical bar members 13a. When the handrail member 11 is stored, that is, when not used, as shown in FIG. 4, the horizontal rod 11b is located at the lower end of the elongated guide hole 14, and the pair of handrail rods 11a extend along the vertical rod member 13a. ing. In addition, the toe guard 12 has a switch device 15
The switch device 15 is attached to the toe guard 12
Is activated when it is moved from the initial position to shut off the power of the hoist installed in the machine room.

Next, the operation of the second embodiment will be described. At the time of checking the pit, the worker stops the elevator car above the lowest floor as in the first embodiment, then unlocks the landing door 6 on the lowest floor and opens it to the left and right. The left and right portions 12a, 12b of the toe guard 12 move in conjunction with the opening movement of the landing door 6, that is, the door panels 6a, 6b, whereby the entire ladder 13 is exposed and appears as shown in FIG. Also, the switch device 15 is actuated by the opening movement of the left and right portions 12a, 12b to shut off the power of the hoisting machine installed in the machine room. As a result, it is possible to reliably prevent the elevator car from being raised or lowered by mistake during the inspection work.

When the worker pulls up the handrail member 11,
The horizontal bar 11b of the handrail member 11 is guided by the elongated guide hole 14 and rises. This horizontal bar 11b is a guide slot 14
When it reaches the upper end, the tip of the mounting rod 11c is fixed to the open door panels 6a, 6b. At this time, horizontal bar 11b as shown in FIG. 5 rather than the cross bar 13b ₁ uppermost ladder 13 is positioned above by a distance of approximately horizontal bar member 13b. Further, the handrail member 11 is a mounting rod 11c.
The front end of is fixed to the door panels 6a and 6b, and thus also functions as a stopper that prevents the closing operation of the door panels 6a and 6b.

The operator grips the handrail bar 11a of the handrail member 11 from the landing floor 4, and first, the horizontal bar 1 of the handrail member 11 is held.
Put your foot on 1b, then move to the ladder 13 and get down to the bottom surface 1a. Thus, the mounting rod 11c of the handrail member 11 functions as a part of the ladder 13, that is, the horizontal rod member 13b.

When the handrail member 11 is pulled out, as shown in FIG. 6, the mounting rod 11c has the door panel 6a,
Since the horizontal rod 11b is fixed to the guide rod 6b and the horizontal rod 11b is located in the guide elongated hole 14 of the ladder 13, the handrail rod 11b is curved in the middle so as to easily cross the hall threshold 5. Since the upper end of the elongated guide hole 14 is bent toward the elevator car as shown in FIG. 7, the degree of bending of the handrail bar 11b can be made relatively small. Further, the horizontal bar 11 b located at the upper end of the guide slot 14 is a horizontal bar member 13 b of the ladder 13.
Since it is located directly above the uppermost horizontal bar member 13b ₁ and is positioned above the uppermost horizontal bar member 13b ₁ by a distance of the horizontal bar member 13b, an operator can move the horizontal bar 11b and the ladder 13 up and down. The horizontal bar 11b can be used as a part of the ladder 13 without any discomfort.

In this way, during inspection, the toe guard 12 is retracted, and the upper part of the ladder 13 behind the toe guard 12 appears immediately below the landing sill 5, so that the worker can easily get off the landing floor 4 to the ladder 10. You can Further, at this time, since the handrail member 11 can be used, the ladder 1
It is possible to get on and off to 0 safely and easily.

Further, in the second embodiment, the handrail member 11 is housed behind the toe guard 12, specifically, in the ladder 13 when not in use, so that the handrail member 11 is accommodated.
It has the advantage that there is no need to prepare a special accommodation space. In the second embodiment, the horizontal bar 11b of the handrail member 11 is also used as the horizontal bar member of the ladder 13. However, the present invention is not limited to this configuration, and the horizontal bar 11b of the handrail member 11 is provided at the position of the horizontal bar 11b of the handrail member 11 shown in FIG.
It is also possible to adopt a configuration in which b is not used as a part of the ladder 13.

Further, in the second embodiment, the toe guard 12
Has a configuration in which it is divided into left and right portions 12a and 12b and moved left and right.
There is an advantage that the a and 12b and the door panels 6a and 6b can be relatively easily interlocked with each other, and the moving amounts of the left and right portions 12a and 12b can be made relatively small.
However, in the present invention, the toe guard 12 does not necessarily have to be divided, and the entire toe guard may be configured to move in one direction from the initial position in association with the movement of the landing door 6.

[0041]

As is apparent from the above description, claim 1
According to the invention described in (1), the footrest of the toe guard exists between the landing floor and the ladder, and the footrest of the toe guard can be used substantially as a part of the ladder. You can easily move from the landing floor to the ladder.

According to the fourth aspect of the invention, the upper part of the ladder is located behind the movable toe guard, but the movable toe guard is moved from the initial position according to the opening movement of the landing door. It is exposed and usable, which allows workers to easily get off the landing floor to the ladder just below it.

According to the third, seventh, eighth and ninth aspects of the present invention, since the handrail member is attached to the landing door, the worker uses the handrail member to operate the landing floor and the floor. It is possible to safely and easily get in and out of the ladder, and the handrail member can prevent the closing operation of the landing door, so that it is possible to prevent the landing door from being accidentally closed during the work.

[Brief description of drawings]

FIG. 1 is a front view schematically showing a first embodiment of a ladder device for inspecting an elevator pit according to the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a plan sectional view showing a first embodiment.

FIG. 4 is a front view schematically showing a second embodiment of the ladder device for inspecting an elevator pit according to the present invention,
The figure which showed the state at the time of normal operation of an elevator.

FIG. 5 is a front view showing a state during pit inspection of the second embodiment.

FIG. 6 is a sectional view taken along the line VI-VI of FIG. 5;

FIG. 7 is a side view showing a part of the ladder of FIG. 6 in an enlarged manner.

FIG. 8 is a plan sectional view showing a conventional ladder device for inspecting an elevator pit.

FIG. 9 is a plan sectional view showing another conventional ladder device for inspecting an elevator pit.

[Explanation of symbols]

 1a Bottom of pit 4 Landing floor 5 Landing sill 7 Toe guard 9 Foot rest 10 Ladder 11 Handrail member 12 Toe guard 13 Ladder

Claims (9)

[Claims] Claims: 1. A ladder device for inspecting an elevator pit used for descending from the floor of the elevator at the lowest floor to the pit at the bottom of the elevator hoistway, in a toe guard installed at the bottom of the hall sill for landing doors. It is provided with a footrest provided and a ladder for pit inspection which is provided below the toe guard and extends from directly below the footguard toward the bottom surface of the pit, and the footrest serves as a part of the ladder. A ladder device for inspecting elevator pits that functions. 2. The elevator pit inspection according to claim 1, wherein the ladder is provided below the toe guard so as to be located in a vertical plane substantially the same as the footrest of the toe guard. Ladder device. 3. A handrail member, the lower end of which engages with the landing sill and the upper end of which is attached to the landing door when opened, wherein the handrail member is attached to the landing door to remove the landing door from the landing door. The ladder device for inspecting an elevator pit according to claim 1, wherein a closing operation is blocked. 4. A ladder device for inspecting an elevator pit used for descending from a floor of the elevator on the lowest floor to a pit at the bottom of an elevator hoistway, the ladder device being installed at the bottom of a hall sill for a hall door. A movable toe guard that is moved from the initial position according to the opening movement of the door and is returned to the initial position according to the closing movement of the landing door, and extends from the lower part of the landing threshold toward the bottom surface of the pit. A pit inspection ladder is provided, and the upper part of the ladder is disposed between the toe guard at the initial position and the side surface of the pit so that the toe guard can be exposed and used when moved from the initial position. A ladder device for inspecting elevator pits. 5. The toe guard is composed of two parts, a left part and a right part, which are divided into two parts, and the left part and the right part are moved in opposite directions so as to open and close according to opening and closing movement of the landing door. The ladder device for inspection of an elevator pit according to claim 4. 6. The apparatus according to claim 4, further comprising a switch device that operates in response to movement of the toe guard from the initial position, the switch device stopping the operation of the hoisting device of the elevator. Ladder device for inspection of the elevator pit described. 7. The handrail member having an upper end portion attached to the landing door when opened, wherein the handrail member prevents the closing operation of the landing door by being attached to the landing door. Item 4. A ladder device for inspecting an elevator pit according to item 4. 8. The ladder is composed of a pair of vertical bar members and a plurality of horizontal bar members for hanging, which are connected at a predetermined interval between the pair of vertical bar members, and the handrail member is , A pair of handrail bars extending in the vertical direction and attached to the landing door, and a horizontal bar connecting the lower ends of the pair of handrail bars, wherein the horizontal bar is the pair of handrail bars. The ladder device for inspection of an elevator pit according to claim 7, wherein the ladder device functions as an upper horizontal bar member of the ladder when mounted on the ladder. 9. The pair of vertical bar members each have an elongated hole extending in the longitudinal direction, and the horizontal bar of the handrail member penetrates the elongated holes of the pair of vertical bar members to provide the handrail. 9. The ladder for inspection of an elevator pit according to claim 8, wherein the member has the horizontal bar positioned at a lower end of the slot when not in use and the horizontal bar positioned at an upper end of the slot when used. apparatus.